JPH11269835A - Hydraulic type sand-dusts recovery device, and hydraulic type sand-dusts sweep-out device, and hydraulic type road scavenger with these device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road scavenging device, which is fitted to the scavenging of roads, on which there are obstructions and which are meandering, as the scavenging works of a town, a comparatively narrow alley, etc., and has a smaller-sized and simple and efficient mechanism including a shoulder. SOLUTION: The hydraulic type sand-dusts recovery device 11 consists of a core 11 with a recovery port 11h, to which a recovery hose 38 from a negative-pressure suction means in out-of-system arrangement is connected, and a pair of road-surface nozzles 13 oppositely disposed at approximately orthogonal places in the progressive direction (b) so as to be faced into the core 11. Brush zones 11b are formed at front- rear places in the progressive direction (b) of the edge section of the core 11. The hydraulic type sand-dusts sweep-out device 2 is composed of a discoid wall plate 21 followed and rotated while being brought into contact with a road surface as verticality with the road surface is kept and a pair of wall-plate nozzles 23 arranged at a specified crossed angle at front-rear places in the progressive direction of the wall plate 21 and set so that injected water is flowed in at a road-surface contact point 21a on the wall plate 21 at a fixed incident angle and collides with the road- surface contact point 21a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to gravels, sand, and the like scattered on road surfaces such as roads and parking spaces (particularly, pavement-treated surfaces).
Mud, dust, dust, ash fall, etc. (hereinafter abbreviated as "sand dust etc.")
Hydraulic dust collection device that collects water by using jet hydraulics,
Also, the present invention relates to a hydraulic sand and dust etc. sweeping device for sweeping sand and the like accumulated on a road shoulder by using jet hydraulic power. In addition, the present invention relates to a hydraulic road surface sweeper that uses these and enables reuse of recovered water.

[0002]

2. Description of the Related Art More than 90% of dust on a road surface is deposited on a road side zone from a road shoulder to a vicinity of 40 cm in a center direction of the road surface.
In order to reduce the frictional force between the tires and the road surface and to deteriorate the surrounding environment due to dust scattering, cleaning of the road surface and maintenance management of the vehicle running surface are performed as part of road management.

In a conventional road surface cleaning operation, cleaning is performed by a work vehicle of a type that collects dust by rotating a rotating brush while sprinkling water so that dust does not soar. However, this method not only consumes a large amount of water and contravenes resource conservation, but also causes the sand and mud containing water to adhere to the brush and significantly lowers the dust collection ability. There was a problem that cleaning work could not be performed at all. In addition, there remains a problem in abrasion and disposal of the rotating brush that comes into contact with the road surface.

[0004] For this reason, the present inventors spray a jet water onto the road surface, collect dust on the road by the fluid force of the jet water, and reuse the jet water once used (Japanese Patent Publication No. 4-58843) was developed first.

[0005] In this method, jet water is jetted from a pair of right and left jet nozzles of a hydraulic dust collector so as to lie diagonally downward, and the jet water from the right and left is merged at a position where it collides with a road surface, and a fluid force is obtained. After collecting the dust from the road, the water and the dust collected on the road are efficiently collected in the collection box by hitting the rising guide plate to assist the splashing force of the jet water after the road surface collision. Is reused as jet water.

Further, the present inventors have additionally arranged a jet jet nozzle as an auxiliary means for increasing the force of the jet water to jump from the road surface, or omit the ascending guide plate by using an air jet to eliminate dust. By directly collecting the jet water containing water into the collection box, the water loss can be reduced, the cleaning distance without water supply can be extended, and the dust and sand and mud scattered on the curb side can be reduced. An improved hydraulic dust collector is provided (Japanese Unexamined Patent Publication No.
228926).

[0007]

The work vehicle according to the above-mentioned invention is intended for continuous cleaning work in a straight section to some extent, and includes a water storage tank, a compressor for pressurizing jet water, separation of sand and mud and water. In addition to the apparatus and the like, an auxiliary means such as a rising guide plate for improving the recovery rate of the jet water mixed with dust is arranged, so that the work vehicle is large.

[0008] In addition, a large amount of accumulation is particularly observed at the curb rising portion of the road shoulder, and in the above-mentioned invention, a curb water jet nozzle and an auxiliary air jet nozzle are provided as a treatment for collecting dust and the like in this portion. However, the discharge was insufficient, and measures against dust scattering by air injection remained as issues.

In view of this, it is suitable for cleaning roads having obstacles or tortuous roads, such as cleaning work in the streets and relatively narrow alleys, and also includes a smaller, simpler and more efficient mechanism for cleaning the road surface including the shoulders. A device was desired.

[0010]

Therefore, the present invention has been made in view of the above problems, and focuses on a phenomenon that jet waters which are made to collide with each other by opposing jets merge and bend in a substantially right-angle direction. , A hydraulic dust collection device, a hydraulic dust discharge device, and the like, which are intended to efficiently collect dust and the like accumulated on the road surface including the shoulder of the road, and to simplify and reduce the size to enhance mobility. It is intended to provide a road cleaning truck.

[0011]

To achieve the above object, the present invention is configured as follows. That is, the hydraulic dust collection device has a bottomless case shape, and has a collection port on the top surface to which a collection hose from a negative pressure suction means arranged outside the system is connected, and faces the inside of the core. A pair of, or two or more pairs of road surface nozzles, which are arranged so as to face each other at a position substantially orthogonal to the traveling direction, and are set so that the water injected oppositely slides on the road surface and collides near the recovery port. You.

Further, a skirt portion made of a flexible material such as a rubber band, a flocking band, or the like is formed at a front and rear position of the edge of the core in the traveling direction. Further, a sliding means for moving the core in such a state that the edge of the core or the tip of the skirt does not touch the road surface is provided.

[0013] The hydraulic type sand and dust evacuating apparatus comprises a wall plate moving on a road surface while keeping a surface along the traveling direction substantially perpendicular to the road surface, and a predetermined crossing angle at front and rear positions of the wall plate in the traveling direction. And a pair of wall plate nozzles arranged so that the jetted water flows near the road surface on the wall plate at a predetermined incident angle and collides.

Further, the wall plate is a disk that rotates following the road surface. Next, the hydraulic road surface sweeper is equipped with a negative pressure suction means and a jet water supply means on a truck which is manually or self-propelled by a driving engine, and a hydraulic dust collection device having the above-described configuration is provided at a front part of the truck. It is configured by arranging devices.

[0015] Also, on the front side of the hydraulic dust collection device,
The invention is characterized in that a hydro-type dust or the like sweeping device having the above configuration is additionally provided. Further, a water storage tank provided with water is provided, the inside of the water storage tank is made to be in a negative pressure state, and suction and recovery is performed by using the negative pressure, thereby forming negative pressure suction means. The injection water supply means is constituted by solid-liquid separation in the tank and supplying the liquid as injection water.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1-1 [Configuration of Hydraulic Dust Collection Device, etc.] FIG. 1 is a schematic perspective view showing the entirety of a hydraulic dust collection device, and a hydraulic dust extraction device of the present embodiment, and FIG. FIG. 3 is a sectional view taken along line AA.

The hydraulic type dust collection device (hereinafter, abbreviated as "collection device") 1 mainly includes a core 11, a pair of road surface nozzles 13, and a sliding means (15).

The core 11 is formed of a metal plate, a resin plate, or the like in the shape of a long rectangular bottomless case, and water supplied from outside the system is sprayed onto the road surface 5 at positions near the road surface at both longitudinal ends thereof. Road surface nozzles 13 are arranged, and the core 11
They are installed facing each other and form a pair. In addition,
The plane size of the core 11 of the present embodiment is set to approximately 40 to 50 cm in the longitudinal direction and approximately 10 to 15 cm in the short direction.

The road surface nozzle 13 is formed such that the opening at the tip thereof is formed in a flat shape, and the jet water 13w is formed in a planar shape so as to flow on the road surface 5 from near the end of the core 11. In this embodiment, the angle of incidence α on the road surface 5 is about 2
It is set in the range of up to 5 degrees.

On the top surface near the center of the core 11,
A recovery port 11h is formed, and its disposition position is set in the vicinity where the jet water 13w from the pair of road surface nozzles 13 collides on the road surface 5. A collection hose 38 connected to negative pressure suction means (described later) disposed outside the system is connected to the collection port 11h.

Further, a brush band 11b in which a number of flexible needle-like materials are planted in a band shape as a skirt is attached to the opposing edge portion along the longitudinal direction of the core 11.
Reference numeral 15 denotes a caster as a sliding means.
And is attached to approximately four corners of the core 11 via. The caster 15 smoothes the movement of the core 11, brings the road surface nozzle 13 close to the road surface 5 so as not to touch the road surface 5, and prevents the brush belt 11 b from being subjected to excessive pressing force on the road surface 5. The mounting has been adjusted to take account of this.

The collection apparatus 1 having such a configuration is described below.
The core 11 is attached to the front of a hydraulic road cleaning vehicle (hereinafter, abbreviated as “cleaning vehicle”) 3 via a suspension mechanism 39 such that the short direction of the core 11 is substantially the traveling direction.

1-2 [Operation of Recovery Apparatus] The recovery apparatus 1 configured as described above operates as follows. The water 13w, 13w injected from the pair of road surface nozzles 13, 13 slides on the road surface in the core 11 (water wall jet), entrains the accumulated dust and the like, and becomes a mixed water wall jet. The dust and the like are carried to the point where the force of the jet reaches. Then, the mixed water wall jets flowing opposite to each other collide near the center, merge with each other, and bounce up in a substantially vertical direction (arrow a). At this time, a collection port 11h is arranged near the center of the core 11, and the force of this bouncing and the collection hose 38 connected to the collection port 11h are provided.
Combined with the negative pressure suction force of the
From 1 h, the liquid is sucked and conveyed through the collection hose 38 (arrow e).

Usually, each of the opposing road surface nozzles 1
In the case where substantially the same amount of water is jetted from 3 and 13 with substantially the same kinetic energy, they collide in the center of the core 11 and then bend and jump in a substantially vertical direction.

At this time, since the brush band 11b is provided on the core 11, the inside of the core 11 is maintained in a moderately negative pressure state, and air is taken in moderately to prevent sticking to the road surface. In addition, flexibility is imparted to improve the passage of dust and the like during movement.

The road surface 5 in the range where the jet flow has flowed by the above operation
The dust and the like accumulated on the core 11 are collected together with the jet water 13w, and by moving the collecting device 1 in the short direction of the core 11 (arrow b), the road surface 5 is cleaned in a belt shape with the width of the core 11 substantially in the longitudinal direction. Will be done.

1-3 [Other Configuration Examples] In the present embodiment, the road surface nozzle 13 facing the inside of the core 11
Are opposed to each other, one at each end.
Two or more pairs may be provided by arranging them individually, or more pairs may be provided.

Although a channel material having a U-shaped cross section is used for the core 11, a rectangular material may be used as long as the bottom surface is open and the recovery port 11h can be arranged in the vicinity of the blast of the jet water 13w. Any of a case shape and a circular case shape may be used.

Further, the skirt portion is preferably formed of a brush band 11b as shown in this embodiment, but may be formed of a rubber plate or a sponge band as long as the function is not impaired.

2-1 [Structure of hydraulic sand / dust sweeping device] Next, hydraulic sand / dust sweeping device (hereinafter referred to as "sweeping device")
Abbreviated. 2) mainly includes a wall plate 21, a pair of wall plate nozzles 23, and a support frame 25.

The wall plate 21 is a thin disk made of a hard plate material such as a metal plate, a resin plate, or the like, and is supported in a state where the surface of the disk surface is along the traveling direction and is substantially perpendicular to the road surface. ing. The wall plate 21 is supported by a support frame 2 (described later) so that its peripheral end surface comes into contact with the road surface 5 and is driven to rotate.
5.

The support frame 25 is provided with the collecting device 1 described above.
And is installed so that the board surface of the wall plate 21 is substantially perpendicular to the longitudinal direction of the core 11 and the center position thereof is located in front of the core 11 in the traveling direction. .

The wall plate nozzles 23 are supported by the support frame 25 on one side of the wall plate 21 on the core 11 side.
They are arranged as a pair at front and rear positions in the traveling direction and symmetrically with respect to a diameter (symmetric axis 21b) passing through the road surface contact point 21a of the wall plate 21 (FIG. 3). Wall plate nozzle 2
3 has a flat opening at its tip end, and the two lines of spray water 23w, 23w become planar and slide on the wall plate 21 and collide near the road surface at a predetermined intersection angle 2θ. It is set as follows. The installation angle of the wall plate nozzle 23 for this purpose is, as shown in FIG.
The angle of incidence β with respect to the disk surface is about 5 degrees.
It is set in the range of degrees to 20 degrees. In the present embodiment, the symmetric angle θ is set to 45 degrees and the incident angle β is set to 10 degrees.
As the set angle, the best angle is selected from the law of conservation of momentum.

2-2 [Operation of Sweeping Device] The sweeping device configured as described above operates as follows. The two streams of jet water 23w jetted from the pair of wall plate nozzles 23 and 23 respectively slide on the wall plate 21 and merge when collided near the road surface on the wall plate 21 at an intersection angle 2θ. It is bent substantially at right angles to the wall plate 21. Since the wall plate 21 is installed at substantially right angles to the road surface 5, the merged water 27 slides on the road surface 5, entrains the accumulated dust and the like, becomes a mixed water wall jet, and the force of the jet is exerted. The dust and the like are swept up to the point (arrow c).

When the wall plate 21 is moved along the curb 7 of the road shoulder 6, the confluent water 27 causes the corner 7 of the curb 7 to move.
The dust and the like accumulated in the area 1 are swept out. In particular, dust and the like often harden at the corners 71 due to accumulation for many years, and are effectively and cleanly washed out by the combined water 27.

By colliding the cross jet water 23w on the wall plate 21, the direction of the flow of the bent flow (parallel to the road surface) is set. In this regard, when the upright surface 72 of the curb 7 is used instead of the wall plate 21, this cannot be expected because the upright state varies.

2-3 [Other Configuration Examples] In this embodiment, the wall plate 21 is a disk that rotates following the road surface, but the present invention is not limited to this. (For example, a caster or a sled) may be used to move while slightly contacting the road surface. In this case, the wall plate nozzle 23 may be directly held by the wall plate 21 instead of the support frame 25.

3-1 [Configuration of Cleaning Cart] FIG. 4 is a schematic diagram showing the configuration of the cleaning truck of the present embodiment. The cleaning car 3 mainly includes a cart 31, a water storage tank 32 provided with a negative pressure suction unit and a jet water supply unit, a suspension mechanism 39,
The recovery device 1 and the sweeping device 2 are configured.

In the figure, reference numeral 31 denotes a bogie on which the entire apparatus is mounted or towed to move. Wheels 31h are arranged at four corners, and are configured to run manually or by driving an engine. I have.

In the drawing, reference numeral 32 denotes a water storage tank having an airtight structure, in which water 32 serving as injection water and recovered water is provided.
w is stored, and a negative pressure suction unit and a jet water supply unit are configured.

The negative pressure suction means forms a negative pressure state by forcibly discharging air from the internal space 32s by a blower 33 disposed above the water storage tank 32, and connects a recovery hose 38 to the space 32s. It is constituted by. 33f
Is a drain filter, which is disposed on the intake side of the blower 33.

The injection water supply means is provided with a pump 36 that absorbs water through a filter 35 disposed in the service water 32w, and the pair of road surface nozzles is connected via a supply hose 37 from a water discharge side of the pump 36. 13, 13 and a pair of wall plate nozzles 23, 23.

The collection device 1 and the sweeping device 2 having the above-mentioned configuration are attached to the carriage 31 via a suspension mechanism 39 at a front position in the traveling direction (arrow b). This suspension mechanism 36
Is for improving the follow-up of the recovery device 1 and the sweeping device 2 to the road surface 5 and the curb 7, and is constituted by a link mechanism in consideration of rolling, damping, and yawing. Since the suspension mechanism 39 is a general mechanism of a known technique and is not the gist of the invention, the detailed description of the configuration is omitted.

3-2 [Operation of Cleaning Vehicle] The cleaning vehicle configured as described above moves forward at an appropriate speed while suspending the recovery device 1 and the sweeping device 2. At this time, the wall plate 21 of the sweeping device 2 is moved as close to the curb 7 as possible (arrow b).

Prior to this, the blower 33 is activated to put the internal space 32s into a negative pressure state, and the collection hose 38 is operated, so that the inside of the core 11 of the collection device 1, especially the vicinity of the collection port 11h is brought into the negative pressure state. At the same time, the pump 36 is activated to suck the water 32w through the filtration filter 35 and the road surface nozzle 13 and the wall plate nozzle 2 through the supply hose 37.
3 is supplied with water for injection (arrow d).

The mixed water (mixed phase of gas, liquid, and solid) containing the dust and the like sucked and collected through the collecting hose 38 by the operation of the collecting device 1 described above is taken into the water storage tank 32 as the water 32w (arrow). e).

In the mixed water taken in, heavy solids are precipitated, solids suspended in the water are blocked by a filter 35 and separated into solid and liquid, and the filtered liquid is supplied to the nozzles 13 and 23 by a pump 36. 13w, 23
will be used as w.

3-3 [Other Configuration Examples] In this embodiment, the inside of the water storage tank 32 is configured as a recycling system in which collected water is separated into solid and liquid and used again as injection water. Not limited to this, the recovered water and the injection water may be separately arranged, and the solid-liquid separation of the recovered water may be performed by another system.

The negative pressure suction means is constructed by negative pressure generation in the water storage tank 32. In addition, a jet pump (of a known mechanism) (not shown) is connected to the recovery hose 38.
May be connected to perform suction recovery.

[0050]

[Effects] The present invention is configured as described above, and has the following effects. In the configuration of the first aspect, the collision and rising of the opposed jet water that has slipped on the road surface,
Since the dust and the like are collected, relatively heavy gravel and sand can be reliably taken in. Since water is used, scattering of the dust can be avoided. According to the configuration of the second aspect, the negative pressure state in the core can be increased, which can contribute to the improvement of the recovery efficiency.

According to the configuration of the third aspect, the contact of the tip of the skirt with the road surface can be adjusted, and the movement of the core can be performed smoothly. In the structure of the fourth aspect, the collision bending flow of the opposed jet water is used similarly to the recovery device of the first aspect, but the accurate flow direction of the bending flow is obtained by using the wall plate. Can be set.

According to the fifth aspect of the present invention, the wall plate is made of a disk, so that it can follow the road surface better.
In addition, there is an effect that the consumption of parts (when slid) and the number of parts are reduced (compared to the arrangement by casters).

According to the construction of the sixth aspect of the present invention, the collection device is mounted on a vehicle such as a trolley so that the vehicle can be provided with a mobile road cleaning truck. According to the configuration of claim 7, by adding a sweeping device to the configuration of claim 6, not only the road surface but also the dust and the like deposited on the road shoulder and the corner of the curb can be effectively cleaned. A car can be configured.

According to the structure of the eighth aspect, since the recovered water having taken in dust and the like is separated into solid and liquid and reused as jet water again, it contributes to resource saving and effective use of resources. be able to.

As described above, the present invention has various industrially useful effects.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing the entirety of a recovery device and a sweeping device of the present embodiment.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is an explanatory diagram showing the behavior of the jet water in the sweeping device.

FIG. 4 is a schematic diagram showing a configuration of a cleaning car according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic dust collection device (collection device) 11. Core 11h .. Recovery port 11b .. Brush band (skirt part) 13. Road surface nozzle 13w .. Injection water 15. Caster (sliding means) 17. Frame 2. Hydropower Dust and dust sweeping device (sweep device) 21 · wall plate 21 a · · · road surface contact point 21 b · · · symmetrical axis 23 · wall plate nozzle 23 w · · spray water 25 · support frame 27 · merged water 3 hydraulic road surface cleaning car (cleaning car 31 ・ trolley 31h ・ wheel 32 ・ water tank 32s ・ ・ internal space 32w ・ ・ water 33 ・ blower (negative pressure suction means) 33f ・ ・ drain filter 35 ・ filtration filter 36 ・ pump (jet water supply means) 37 ・Supply hose 38 / Recovery hose 39 / Suspension mechanism 5 Road surface 6 Road shoulder 7 Curb 71 / Corner 72 / Elevation

Claims (8)

[Claims] 1. A core having a bottomless case shape and having on its upper surface a recovery port to which a recovery hose from a negative pressure suction means disposed outside the system is connected, and a forward direction substantially facing the inside of the core. A pair, or two or more pairs of road surface nozzles, which are arranged so as to face each other at orthogonal positions, and are set so that water jetted oppositely slides on the road surface and collides near the recovery port. Type dust collection equipment. 2. A hydraulic dust collection device according to claim 1, wherein a skirt portion made of a flexible material such as a rubber band, a flocked band or the like is formed at a front and rear position of the edge of the core in the traveling direction. apparatus. 3. The hydraulic sand and dust according to claim 1, further comprising a sliding means for moving the core so that the edge or the skirt tip does not touch the road surface. Etc. collection equipment. 4. A wall plate which moves on a road surface while keeping a surface along the traveling direction substantially perpendicular to the road surface, and is disposed at a predetermined crossing angle at front and rear positions in the traveling direction of the wall plate, and is jetted. A pair of wall plate nozzles set so that the water flows into the vicinity of the road surface on the wall plate at a predetermined angle of incidence and collides with the road surface, and the like, and a device for discharging water and dust, etc. 5. The apparatus according to claim 4, wherein the wall plate is a disk that rotates following the road surface. 6. A hydraulic sand / dust according to claim 1, wherein a negative pressure suction means and a jet water supply means are mounted on a truck which is self-propelled by a manual or driving engine, and the traveling front of the truck is provided. A hydraulic road surface sweeper characterized by including a recovery device. 7. The hydraulic road sweeping vehicle according to claim 6, wherein the hydraulic sand and dust sweeping device according to claim 4 or 5 is disposed at the front side of the hydraulic sand and dust collecting device. 8. A negative pressure suction means is provided by arranging a water storage tank provided with water, making the inside of the water storage tank a negative pressure state, and suctioning and recovering the negative pressure. 8. A hydraulic road surface cleaning vehicle according to claim 6, wherein a jetting water supply unit is configured by solid-liquid separated in the water storage tank and supplying liquid as jetting water.